I am experiencing the same problem on linux mint katya. The ide-usb2 adapter is from SPM (speed dragon multimedia) and uses a nec chipset(ID 0409:0056 NEC Corp.). I have tried all the different jumper positions on the connected drive but discs will not mount regardless of setting. But the command udisks --mount /dev/sr1 from this thread works.
The adapter: http://www.speeddragon.com/index.php...uctInfo&Id=106
[11970.092170] usb 1-4.6: new high speed USB device using ehci_hcd and address 11
[11970.188961] scsi7 : usb-storage 1-4.6:1.0
[11973.711964] scsi 7:0:0:0: CD-ROM PLEXTOR DVDR PX-716A 1.10 PQ: 0 ANSI: 0 CCS
[11973.851160] sr1: scsi3-mmc drive: 40x/40x writer cd/rw xa/form2 cdda tray
[11973.851517] sr 7:0:0:0: Attached scsi CD-ROM sr1
[11973.851760] sr 7:0:0:0: Attached scsi generic sg4 type 5
Edit: Data DVDs, data CDs and other DVD movies does show up now after maybe waking the drive up the first time with that manual mount command. The discs now show up wihout me doing anything else than placing them in the dvd drive.